Goodwill and Other Intangible Assets - Useful Life and Amortization (Details) $ in Thousands			3 Months Ended												6 Months Ended			9 Months Ended			12 Months Ended
	Oct. 01, 2015 USD ($)	Oct. 01, 2014 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Sep. 30, 2013 USD ($)	Jun. 30, 2013 USD ($)	Mar. 31, 2013 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2013 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2013 USD ($)	Dec. 31, 2015 USD ($) item	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Finite-Lived Intangible Assets, Accumulated Amortization			$ 144,107	$ 130,706	$ 114,260	$ 98,060	$ 81,660	$ 65,308	$ 51,581	$ 43,924	$ 39,093				$ 114,260	$ 51,581		$ 130,706	$ 65,308		$ 144,107	$ 81,660	$ 39,093
Amortization of intangibles			$ 17,066	$ 16,545	$ 16,284	$ 16,377	$ 16,483	$ 13,814	$ 8,439	$ 4,757	$ 2,444	$ 1,568	$ 1,677	$ 1,733	32,661	$ 13,196	$ 3,410	49,206	$ 27,010	$ 4,978	$ 66,272	$ 43,493	$ 7,422
Goodwill, Impairment Loss	$ 0	$ 0
Impairment of IPR&D projects															$ (2,627)			$ (2,627)
Maximum
Finite-Lived Intangible Asset, Useful Life																					30 years
Minimum
Finite-Lived Intangible Asset, Useful Life																					1 year
VersaPharm [Member]
Number of IPR&D projects abandoned | item																					2
Impairment of IPR&D projects																					$ 2,600
VersaPharm [Member] | R&D expenses
Impairment of IPR&D projects																					$ 2,600